package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;
    /**
    * @Description: 新增菜品，同时保存对应的口味数据
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @Override
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {

        /**保存菜品基本信息到菜品表dish*/

        this.save(dishDto);

        /**菜品id*/

        Long dishId = dishDto.getId();

        /**菜品口味*/

        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors=flavors.stream().map((item)->{
           item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());


        /**保存菜品口味数据到菜品口味表dish_flavor*/

        dishFlavorService.saveBatch(flavors);
    }
    
    
    /**
    * @Description: 根据id查询菜品信息和对应的口味信息
            * @Param: 
            * @return: 
            * @Author: Lei
            * @Date: 
     */
    
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        /**查询菜品基本信息*/
        Dish dish = this.getById(id);

        DishDto dishDto=new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        /**查询当前菜品对应的口味信息，从dish_flavor表查询*/
        LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(lambdaQueryWrapper);
        dishDto.setFlavors(flavors);


        return dishDto;
    }


    /**更新菜品信息同时更新口味信息*/
    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        /**更新菜品表基本信息*/
        this.updateById(dishDto);

        /**更新菜品口味表信息*/
        /**先清理当前菜品对应的口味数据--dish_flavor表的delete操作*/
        LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(lambdaQueryWrapper);
        /**在添加当前提交过来的口味数据--dish_flavor表的insert操作*/
        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors=flavors.stream().map((item)->{
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }
}
